package com.shimakaze.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.shimakaze.reggie.common.R;
import com.shimakaze.reggie.entity.Employee;
import com.shimakaze.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;


/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){
        //1.将前端页面提交的password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        //2.根据前端页面提交的username查询数据库
        String username = employee.getUsername();
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(Employee::getUsername,username);
        Employee emp = employeeService.getOne(lambdaQueryWrapper);

        //3.判断查询结果
        if(emp == null){
            return R.error("登录失败");
        }

        //4.匹配密码
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态是否为已禁用
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6.登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param request
     * @return
     */
    @PostMapping("/logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }

    /**
     * 新增员工
     * @param employee
     * @return
     */
    @PostMapping
    public R<String> save(/*HttpServletRequest request, */@RequestBody Employee employee){
        log.info("新增员工:{}",employee.toString());
        //设置员工初始密码并进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //使用公共字段填充下列数据
/*        //创建时间
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        //获取登录用户id
        Long empId = (Long)request.getSession().getAttribute("employee");
        //创建人
        employee.setCreateUser(empId);
        employee.setUpdateUser(empId);*/

        //调用service
        employeeService.save(employee);
        return R.success("添加员工成功");
    }


    /**
     * 员工信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name){
        log.info("page = {}, pageSize = {}, name = {}",page,pageSize,name);

        //分页构造器
        Page pageInfo = new Page(page,pageSize);
        //条件构造器
        LambdaQueryWrapper<Employee> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //过滤条件
        lambdaQueryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        lambdaQueryWrapper.orderByAsc(Employee::getUpdateTime);
        //执行查询
        employeeService.page(pageInfo,lambdaQueryWrapper);

        return R.success(pageInfo);
    }


    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(/*HttpServletRequest request,*/@RequestBody Employee employee){
        log.info(employee.toString());

/*        Long empId = (Long) request.getSession().getAttribute("employee");
        employee.setUpdateUser(empId);
        employee.setUpdateTime(LocalDateTime.now());*/

        employeeService.updateById(employee);

        return R.success("员工信息修改成功");
    }

    /**
     * 根据id查询员工信息
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("查询id为{}的员工信息",id);
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }else{
            return R.error("员工信息不存在");
        }
    }
}
